Premature axon-oligodendrocyte interaction contributes to stalling of experimental axon regeneration after injury to the white matter
Ephraim F.Trakhtenberg
Department of Neuroscience,University of Connecticut School of Medicine,Farmington,CT,USA
摘要：Studies from nearly 3 decades ago suggested that,in the central nervous system(CNS),myelination of axons by oligodendrocytes not only helps improve axonal conductivity but also stabilizes circuitry(Colello and Schwab,1994).Over the years,myelin sheaths produced by oligodendrocytes have been found to contain multiple molecules that are inhibitory to axonal growth(e.g.,MAG,NogoA,OMgp,Semaphorins)(Yiu and He,2006;Silver et al.,2014).After white matter injury in the adult CNS,myelin debris from damaged axons and dead oligodendrocytes accumulates in the forming glial scar and exposes these myelin-associated axon growth-inhibitory molecules to the injured axonal stumps,thereby contributing to the inhibition of axonal regrowth.During development,CNS axons reach their postsynaptic targets and stop growing before oligodendrocytes appear and myelinate them(Foran and Peterson,1992;Dangata et al.,1996).Therefore,myelin-associated axon growth-inhibitory molecules interacting with already grown axons during myelination were thought to block axons from promiscuous sprouting and miswiring,thereby stabilizing neural circuitry in the CNS(Colello and Schwab,1994).
机标关键词：interactionregenerationwhiteafteraxoncontributesexperimentalinjury
论文发表日期：2024-03-28
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：2( 469-470 )